Unless you are using an VPN, your ISP can see the IPs you are communicating with regardless of the hostnames associated with them and in turn resolve those back to hostnames or at least netblock owners.
True, but n the cloud era, destination IPs don't mean what they used to. If peopel wash their blog with AWS or Cloudflare or Netlify, etc., dest. IP means little.
They're not talking about IP's. They're talking about SNI, which communicates the target hostname in the clear before the https session is established. ECH addresses that problem, but that is only recently starting to see wider use.